Welcome to our T-Shirt glossary. Funny Graphic T-Shirts believes in education and teaching people on the technical side of T-Shirt printing so you can enjoy it as much as we do! Here is a list of some of the most common technical terms in T-Shirt design and printing terminology:

Terms and Definitions

Additive Color Mixing – Known as “Light Mixing” and is commonly used in televisions and monitors to produce the images you see. The additive reproduction process usually uses red, green and blue light to produce the other colors. Combining one of these additive primary colors with another in equal amounts produces the additive secondary colors cyan, magenta, and yellow. Combining all three primary lights (colors) in equal intensities produces white. Varying the luminosity of each light (color) eventually reveals the full gamut of those three lights (colors).
AI – (Acronym for Adobe Illustrator artwork). A file format created by Adobe Systems used for vector artwork in a single page EPS or PDF format.
CMYK -(Acronym for Cyan, Magenta, Yellow and Black ‘Key plate’) – Also known as process color or four color printing, it is based on a subtractive color mixing model of adding the four separate inks to a print in order to achieve a full color print.
Digital Printing – a method of printing from a digital image directly to media. More expensive than traditional screen printing, the cost is offset by less costly procedures, allowing for on demand printing, short turn around, and even a modification of the image and variable data with each print.
EPS – (Acronym for Encapsulated PostScript). A graphics file format which is essentially a self-contained PostScript document.
Font – A complete character set of a a certain typeface in typography. Examples include: Arial, Times Roman, Impact and Comic Sans.
JPEG – (Acronym for Joint Photographic Experts Group) – a commonly used method of lossy compression for digital photography (image). The degree of compression can be adjusted, allowing a selectable trade off between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality.
Merchant Retailer – a company that sells a product or service online, accepts payments and fulfills orders.
PDF – (Acronym for Portable Document Format). Developed by Adobe Systems, a PDF encapsulates all text, fonts, images etc. into a portable document that runs independent of softare installed on a computer or portable device.
PNG – (Acronym for Portable Network Graphics) – a bitmapped image format and video codec that employs lossless data compression that was designed to replace the GIF format and is patent license free.
PSD – (Acronym for Photoshop Document). A file format created by Adobe Systems used to alter photographs and artwork in a layer format.
RGB – Red, Green, Blue. Additive color mixing used in computer monitors and televisions.
Screen Printing – (aka Silk-screening) – a printing technique that uses a woven mesh to support an ink-blocking stencil. The attached stencil forms open areas of mesh that transfer ink or other printable materials which can be pressed through the mesh as a sharp-edged image onto a substrate. A roller or squeegee is moved across the screen stencil, forcing or pumping ink past the threads of the woven mesh in the open areas.
Subtractive Color Mixing – The mixing of ink, dyes, paints, etc. that then absorb some wavelengths of the elctromagnetic spectrum and allow the perceived color to be reflected back (un-absorbed wavelengths). Subtractive color mixing would be used in relation to CMYK printing. For example: Yellow and Cyan ink would combine to make a greenish color. The greenish color would absorb all light that hits it except the wavelengths of light that your eye perceives as green.